Question

what does the federal land policy and management act aim to prevent?
environmental pollution
mining on state owned lands
unnecessary degradation of federal lands

Explanation:

The Federal Land Policy and Management Act (FLPMA) focuses on the management and protection of federal public lands. Its core goals include preventing avoidable harm to these lands. Environmental pollution is not its primary target, and it does not restrict mining on state-owned lands.

Answer:

unnecessary degradation of federal lands